Transition Point Between Distended And Collapsed Veins

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There are no valves between the right atrium and the internal jugular vein. It follows that the degree of distension in the vein equates to the pressure in the right atrium and the venous waveform provides information about cardiac function.

The internal jugular vein enters the neck behind the mastoid process. Il runs deep to the sternomastoid muscle before entering the thorax between its sternal and clavicular heads. Because of its deep position the internal jugular vein can only be examined when the neck muscles are relaxed. Only a diffuse pulsation can be seen and the vein is not visible. The external jugular vein is visible but it is not routinely examined because it is prone to kinking and partial obstruction as it traverses the deep fascia of the neck.

CAUSES Cushingold fades

Buffalo 'hump'

Signs of disease

Collapsed Vein

Retinopathy

Left ventricular hypertrophy 3rd/4th heart sound

Basal creps

Renal failure

Atrial fibrillation

Dependent oedema

Fig. 3.18 Signs of hypertension.

Renal disease i bruit

Radio-femoral delay

Fig. 3.18 Signs of hypertension.

CAUSES Cushingold fades

Buffalo 'hump'

Signs of disease

Renal disease i bruit

EFFECTS

Cerebrovascular disease

Retinopathy

Left ventricular hypertrophy 3rd/4th heart sound

Basal creps

Renal failure

Atrial fibrillation

Radio-femoral delay

Dependent oedema

Radiofemoral Delay

Fig. 3.19 Jugular venous pressure in a normal subject. 0 Supine: jugular vein distended: pulsation not visible. IB Reclining at 45 degrees: point of transition between distended and collapsed vein can usually be seen to pulsate just above the clavicle. E Upright: upper part of vein collapsed and transition points obscured by sternum.

Fig. 3.19 Jugular venous pressure in a normal subject. 0 Supine: jugular vein distended: pulsation not visible. IB Reclining at 45 degrees: point of transition between distended and collapsed vein can usually be seen to pulsate just above the clavicle. E Upright: upper part of vein collapsed and transition points obscured by sternum.

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Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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Responses

  • noemi
    Is a collapsed jugular the same a a distended jugular?
    16 days ago

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